CN119603921A - Liquid cooling server rack - Google Patents

Abstract

The application relates to the field of liquid cooling servers, and particularly discloses a liquid cooling server cabinet which is characterized by comprising a water cooling box and a server cabinet, wherein the server cabinet is partially inserted into the water cooling box, cooling liquid is filled in the server cabinet, and the pressure of the cooling liquid in the water cooling box is larger than that of water in the water cooling box so as to ensure that the cooling liquid can only flow into the water cooling box unidirectionally when the server cabinet leaks. This scheme is through combining server cabinet and water-cooling tank, and the server submergence is in the coolant liquid of server cabinet, the server cabinet mostly submergence is in the water-cooling tank, the heat transfer of server reaches the coolant liquid, the coolant liquid passes through the lateral wall of server cabinet and transfers the water of water-cooling tank with the heat, the water-cooling tank generally needs external water source for the water in the water-cooling tank is replaced always, through the water pressure in the control coolant liquid pressure is greater than the water-cooling tank, so, when the server cabinet takes place to leak, the coolant liquid can flow into the water-cooling tank in, the water in the water-cooling tank can not flow into the server cabinet in, guarantee server safety.

Description

Liquid cooling server rack

Technical Field

The application relates to the field of liquid cooling servers, in particular to a liquid cooling server cabinet.

Background

The liquid cooling server cabinet is a device for radiating heat of a server by adopting a liquid cooling technology, and the following detailed description is provided for the server:

The liquid cooling technology utilizes the high heat conduction coefficient of liquid, the liquid is conveyed to each device in the server cabinet from the condenser through the pump, the heat generated by the device is absorbed, and then the heat flows back to the condenser for cooling, so that the effect of high-efficiency cooling is achieved in a circulating and reciprocating mode.

The liquid circulation system consists of a pump, a pipeline and a heat exchanger, and brings heat absorbed by the liquid from the server cabinet back to the cooling system for cooling treatment, and the cooling system mainly consists of a cooling tower, a chilled water system and a heat dissipation system and is responsible for transferring the heat in the liquid to the external environment.

And the immersed liquid cooling server cabinet is characterized in that the server is completely immersed in cooling liquid, the heat of all heating elements is directly transferred to the cooling liquid, and then the cooling liquid is circulated or evaporated and condensed for phase change to dissipate heat. The cooling liquid circularly flows in a single-phase immersed liquid cooling mode, and the cooling liquid is evaporated, condensed and phase-changed in a phase-change immersed liquid cooling mode.

When the immersion liquid cooling server cabinet leaks the cooling liquid, the cooling liquid can directly contact the electronic components of the server. If the cooling liquid has conductivity, short circuit can be caused, and key hardware components such as a main board, a CPU, a memory and the like of the server are damaged. For example, some conventional coolants may contain ionic components and once leaked, like a "conductive bridge" is built between electronic components, an instantaneous short circuit may burn the chip, rendering the server inoperable. Therefore, the prior cooling liquid generally adopts fluoridation liquid.

However, after absorbing heat, the fluoridized liquid needs to be cooled again by an additional cooling medium, and water cooling is generally mainly performed, and if a server cabinet is damaged during water cooling, water can enter the fluoridized liquid and finally contact with electronic components, so that the problems of short circuit of the server and the like are easily caused.

Disclosure of Invention

In order to improve the problem of server security, the application provides a liquid cooling server cabinet.

The application provides a liquid cooling server cabinet, which adopts the following technical scheme:

The liquid cooling server cabinet is characterized by comprising a water cooling box and a server cabinet, wherein the server cabinet is partially inserted into the water cooling box, cooling liquid is filled in the server cabinet, and the pressure of the cooling liquid in the water cooling box is higher than that of water in the water cooling box so as to ensure that the cooling liquid can only flow into the water cooling box unidirectionally when the server cabinet leaks.

Through adopting above-mentioned technical scheme, this scheme is through combining server cabinet and water-cooling tank, and the server submerges in the coolant liquid of server cabinet, the server cabinet is mostly submergence in the water-cooling tank, the heat transfer of server reaches the coolant liquid, the coolant liquid passes through the lateral wall of server cabinet and passes through the water of heat transfer water-cooling tank, the water-cooling tank generally needs external water source for the water in the water-cooling tank is replaced always, through the control coolant liquid pressure is greater than the water pressure in the water-cooling tank, so, when the server cabinet takes place to leak, the coolant liquid can flow into the water-cooling tank, the water in the water-cooling tank can not flow into in the server cabinet, guarantee server safety, the coolant liquid in the server cabinet is generally the fluoride liquid, also can be mineral oil, organosilicon liquid, the liquid that does not possess conductive property but good heat conductivility such as dibutyl phosphate.

Optionally, a first liquid level sensor is arranged in the server cabinet, the water cooling tank is provided with a water inlet and a water outlet, electromagnetic valves are arranged at the water inlet and the water outlet, and when the first liquid level sensor is lower than a set value, the electromagnetic valve of the water inlet is closed, and the electromagnetic valve of the water outlet is opened.

By adopting the technical scheme, the set value is that when the liquid level is at the set value, the cooling liquid pressure approaches the water pressure, but the cooling liquid pressure is kept to be higher than the water pressure, for example, the cooling liquid pressure-water pressure=1 kpa is set, and the water cooling tank is controlled to be out only by the electromagnetic valve, so that the water pressure is reduced, the water pressure is always lower than the cooling liquid pressure, and the water outlet is stopped at least when the liquid level of the water is lower than the bottom of the server cabinet.

Optionally, the server cabinet is internally provided with an agitating piece, and the agitating piece drives the cooling liquid to flow.

Through adopting above-mentioned technical scheme, can drive the coolant liquid through stirring piece and flow, avoid local accumulated heat.

Optionally, the stirring member comprises a circulation pump or a magnetic water pump or a water turbine.

By adopting the technical scheme, the stirring can be realized in the mode.

Optionally, a first liquid level sensor is arranged in the server cabinet, the server cabinet is connected with a liquid supplementing system, and when the first liquid level is lower than a set value, the liquid supplementing system supplements cooling liquid.

By adopting the technical scheme, the pressure of the cooling liquid can be ensured to be always higher than the water pressure by adopting a cooling liquid supplementing mode.

Optionally, the server cabinet has a flow channel, the flow channel being isolated from the interior of the server cabinet.

By adopting the technical scheme, the chip part of the server is the main heat source, so that the flow channel is arranged near the main heat source, the heat exchange area is increased, water can flow through the flow channel, and cooling liquid cannot enter the flow channel.

Optionally, the top of the water cooling box is provided with an opening, the server cabinet is provided with an annular limiting part, and a part of the server cabinet is inserted into the opening and then abuts against the upper surface of the top of the water cooling box.

By adopting the technical scheme, the server cabinet can be conveniently and rapidly installed in the water cooling box by adopting the mode.

Optionally, the top upper surface indent of water-cooling tank forms the ring channel, places the sealing washer in the ring channel, and annular spacing portion compresses tightly the sealing washer.

By adopting the technical scheme, the leakage of water from the joint of the server cabinet and the water cooling box is avoided by the sealing ring.

Optionally, an annular connecting ring is formed outside the opening, a plurality of annular cutting grooves are formed in the outer wall of the annular connecting ring, and the annular connecting ring is welded and sealed with the annular limiting part.

In this way, the welding seal is adopted, and water leakage is not worry generally, but if leakage occurs, the annular cutting groove is cut by the cutting machine to detach the server cabinet, and then a new server cabinet is welded.

Optionally, a second liquid level sensor is arranged in the water cooling tank, the server cabinet is connected with a cooling liquid discharging system, and when the water level is lower than the lowest value of the server cabinet, the cooling liquid discharging system is started.

When water is ensured not to enter the server cabinet and the server cabinet is detected to have leakage, the cooling liquid in the server cabinet is directly discharged and collected.

In summary, the present application includes at least one of the following beneficial technical effects:

1. The liquid level difference is set to ensure that the cooling liquid pressure is larger than the water pressure, so that water cannot enter the server cabinet;

2. The materials of the outer pipelines (the water inlet pipe, the water outlet pipe and the like) of the water cooling box in the scheme are not limited;

3. The liquid cooling server cabinets can be used in a plurality of combinations, and the water outlets and the water inlets of two adjacent liquid cooling server cabinets are connected;

4. and cooling of the server is realized by adopting a mode of combining inner immersion and outer immersion.

Drawings

FIG. 1 is a schematic view showing the overall structure of embodiment 1 of the present application;

FIG. 2 is a schematic diagram of embodiment 2 of the present application, externally connected with tap water;

FIG. 3 is a schematic diagram of a water receiving circulation system according to embodiment 2 of the present application;

FIG. 4 is a schematic structural view of embodiment 3 of the present application;

FIG. 5 is a schematic view of the structure of an embodiment of the present application, and reference is made to embodiments 4 to 6;

FIG. 6 is a block diagram of a server cabinet according to an embodiment of the application;

fig. 7 is a schematic view of the opening of the water cooling tank.

Reference numeral 1, a water cooling tank; 2, a server cabinet, 3, a circulating water pipe, 4, a circulating water pump, 5, a water cooling tower, 6, a first liquid level sensor, 7, an electromagnetic valve, 8, a three-way electromagnetic valve, 9, an agitating piece, 10, a liquid supplementing box, 11, a liquid supplementing pump, 12, a second liquid level sensor, 13, a circulating channel, 14, an annular limiting part, 15, an opening, 16, an annular connecting ring and 17, and an annular cutting groove.

Detailed Description

The application is described in further detail below with reference to fig. 1-7.

Embodiment 1A liquid cooling server cabinet comprises a water cooling box 1 and a server cabinet 2. The server cabinet 2 is partially inserted into the water cooling tank 1, and in general, most of the server cabinet 2 is positioned in the water cooling tank 1, preferably 75% -80% of the volume is positioned in the water cooling tank 1, and a small part of the volume is higher than the water cooling tank 1. The server cabinet 2 is filled with a cooling liquid, which is usually a fluorinated liquid, or a liquid having no electric conductivity but good heat conductivity, such as mineral oil, silicone liquid, or dibutyl phosphate. The pressure of the cooling fluid in the water cooling tank 1 is greater than the pressure of the water in the water cooling tank 1 to ensure that only the cooling fluid flows unidirectionally into the water cooling tank 1 in case of a leak in the server cabinet 2. The above object is mainly achieved by the liquid level difference, so that a small part of the server cabinet 2 needs to be higher than the water cooling tank 1. The water cooling box 1 is generally provided with a water inlet and a water outlet, the water inlet can be externally connected with tap water through a water pipe, the water outlet is directly connected with the water pipe for discharging, and cold water is always replenished through the tap water. The water circulation system can also be connected, for example, the water circulation system comprises a circulating water pipe 3, a circulating water pump 4 and a water cooling tower 5, the circulating water pipe 3 is connected with a water inlet and a water outlet, and the circulating water pump is arranged on the circulating water pipe 3 after the circulating water pipe 3 passes through the water cooling tower 5.

Embodiment 2A liquid cooling server cabinet comprises a water cooling box 1 and a server cabinet 2. The server cabinet 2 is partially inserted into the water cooling tank 1, and in general, most of the server cabinet 2 is positioned in the water cooling tank 1, preferably 75% -80% of the volume is positioned in the water cooling tank 1, and a small part of the volume is higher than the water cooling tank 1. The server cabinet 2 is filled with a cooling liquid, typically a fluorinated liquid. The pressure of the cooling fluid in the water cooling tank 1 is greater than the pressure of the water in the water cooling tank 1 to ensure that only the cooling fluid flows unidirectionally into the water cooling tank 1 in case of a leak in the server cabinet 2. The above object is mainly achieved by the liquid level difference, so that a small part of the server cabinet 2 needs to be higher than the water cooling tank 1. The water cooling box 1 is generally provided with a water inlet and a water outlet, the water inlet can be externally connected with tap water through a water pipe, the water outlet is directly connected with the water pipe for discharging, and cold water is always replenished through the tap water. The water circulation system can also be connected, for example, the water circulation system comprises a circulating water pipe 3, a circulating water pump 4 and a water cooling tower 5, the circulating water pipe 3 is connected with a water inlet and a water outlet, and the circulating water pump 4 is arranged on the circulating water pipe 3 after the circulating water pipe 3 passes through the water cooling tower 5.

The server cabinet 2 is internally provided with a first liquid level sensor 6, the water cooling box 1 is provided with a water inlet and a water outlet, electromagnetic valves 7 are arranged at the water inlet and the water outlet, and when the first liquid level sensor 6 is lower than a set value, the electromagnetic valve 7 of the water inlet is closed, and the electromagnetic valve 7 of the water outlet is opened. By adopting the above technical solution, wherein the set value is that when the liquid level is at the set value, the cooling liquid pressure approaches the water pressure, but the cooling liquid pressure is kept larger than the water pressure, for example, the cooling liquid pressure-water pressure=1 kpa is set, and the water cooling tank 1 is controlled to be only out and not in through the electromagnetic valve 7, so that the water pressure is reduced, the water pressure is always lower than the cooling liquid pressure, and the water outlet is stopped at least when the liquid level of the water is lower than the bottom of the server cabinet 2.

When the water circulation system is connected, the electromagnetic valve 7 at the water outlet needs to be provided with a three-way electromagnetic valve 87, one is connected with circulation and the other is connected with emptying.

Embodiment 3 an agitating member 9 may be provided on the basis of embodiments 1 and 2, the agitating member 9 is located in the server cabinet 2, the agitating member 9 drives the cooling liquid to flow, and the cooling liquid can be driven to flow by the agitating member 9, so as to avoid local heat accumulation. The stirring member 9 includes a circulation pump or a magnetic water pump or a water turbine. The present embodiment may be a circulation pump.

Embodiment 4A liquid cooling server cabinet comprises a water cooling box 1 and a server cabinet 2. The server cabinet 2 is partially inserted into the water cooling tank 1, and in general, most of the server cabinet 2 is positioned in the water cooling tank 1, preferably 75% -80% of the volume is positioned in the water cooling tank 1, and a small part of the volume is higher than the water cooling tank 1. The server cabinet 2 is filled with a cooling liquid, typically a fluorinated liquid. The pressure of the cooling fluid in the water cooling tank 1 is greater than the pressure of the water in the water cooling tank 1 to ensure that only the cooling fluid flows unidirectionally into the water cooling tank 1 in case of a leak in the server cabinet 2. The above object is mainly achieved by the liquid level difference, so that a small part of the server cabinet 2 needs to be higher than the water cooling tank 1. The water cooling tank 1 is generally provided with a water inlet and a water outlet, wherein the water inlet can be externally connected with tap water through a water pipe, and can also be connected with a water circulation system, for example, water from the water outlet enters the water inlet after passing through the water cooling tower 5. The server cabinet 2 is internally provided with a first liquid level sensor 6, the server cabinet 2 is connected with a liquid supplementing system, and when the first liquid level is lower than a set value, the liquid supplementing system supplements cooling liquid. The fluid infusion system can comprise a fluid infusion tank 10 and a fluid infusion pump 11, wherein an outlet of the fluid infusion tank 10 is connected with an inlet of the fluid infusion pump 11 through a fluid infusion pipe, and an outlet of the fluid infusion pump 11 is communicated with the server cabinet 2 through the fluid infusion pipe. By adopting the technical scheme, the pressure of the cooling liquid can be ensured to be always higher than the water pressure by adopting a cooling liquid supplementing mode.

Example 5A fluid replacement system may be added to the system of example 2, wherein the fluid replacement system may be configured to replace the cooling fluid when the first fluid level is below the set point. The fluid infusion system can comprise a fluid infusion tank 10 and a fluid infusion pump 11, wherein an outlet of the fluid infusion tank 10 is connected with an inlet of the fluid infusion pump 11 through a fluid infusion pipe, and an outlet of the fluid infusion pump 11 is communicated with the server cabinet 2 through the fluid infusion pipe. By adopting the technical scheme, the pressure of the cooling liquid can be ensured to be always higher than the water pressure by adopting a cooling liquid supplementing mode.

Embodiment 6A liquid cooling server cabinet, on the basis of any one of embodiments 2-5, a second liquid level sensor 12 is arranged in the water cooling tank 1, the server cabinet 2 is connected with a cooling liquid discharge system, and when the water level is lower than the lowest value of the server cabinet 2, the cooling liquid discharge system is started. The drainage system can be provided with a drainage pump and a collection box independently, so that the cooling liquid in the damaged server cabinet 2 is pumped into the collection box, and the cooling liquid is pumped again after a new server cabinet 2 is installed. The drainage system and the fluid infusion system can share one set in this example, the fluid infusion system is controlled to supplement or extract the fluid through the fluid infusion pump 11, and the fluid infusion pipe is inserted into the server cabinet 2 near the bottom.

Wherein the contents of example 3 can also be added to examples 4-6.

In all the above embodiments, the server cabinet 2 has a flow channel 13, and the flow channel 13 is isolated from the interior of the server cabinet 2. Since the chip portion of the server is a main heat source, the flow channel is opened in the vicinity of the main heat source to increase the heat exchange area, water can flow through the flow channel, but the cooling liquid does not enter the flow channel 13. The server cabinet 2 and the water cooling box 1 are connected in two modes, one is welded, and the other is connected by bolts. The top of the water cooling box 1 is provided with an opening 15, the server cabinet 2 is provided with an annular limiting part 14, a part of the server cabinet 2 is inserted into the opening 15, then the annular limiting part 14 abuts against the top upper surface of the water cooling box 1, and the annular limiting part 14 is welded on the top of the water cooling box 1. The welding mode is preferably to form an annular connecting ring 16 outside the opening 15, a plurality of annular cutting grooves 17 are formed in the outer wall of the annular connecting ring 16, and the annular connecting ring 16 is welded and sealed with the annular limiting part 14.

Another way is that an annular groove is concavely formed on the upper surface of the top of the water cooling tank 1, a sealing ring is placed in the annular groove, the annular limiting part 14 compresses the sealing ring, and a bolt penetrates through the annular limiting part 14 to be connected with the water cooling tank 1.

In the description of the present invention, it should be understood that the terms "upper," "lower," "left," "right," and the like indicate an orientation or a positional relationship based on that shown in the drawings, and are merely for convenience of description and for simplifying the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, as well as a specific orientation configuration and operation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected via an intermediate medium, or in communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present invention.

Claims (10)

1. The liquid cooling server cabinet is characterized by comprising a water cooling box and a server cabinet, wherein the server cabinet is partially inserted into the water cooling box, cooling liquid is filled in the server cabinet, and the pressure of the cooling liquid in the water cooling box is higher than that of water in the water cooling box so as to ensure that the cooling liquid can only flow into the water cooling box unidirectionally when the server cabinet leaks.

2. The liquid cooling server cabinet of claim 1, wherein the server cabinet is internally provided with a first liquid level sensor, the water cooling box is provided with a water inlet and a water outlet, electromagnetic valves are arranged at the water inlet and the water outlet, and when the first liquid level sensor is lower than a set value, the electromagnetic valve of the water inlet is closed, and the electromagnetic valve of the water outlet is opened.

3. The liquid cooling server cabinet of claim 1, wherein the server cabinet is internally provided with an agitating piece, and the agitating piece drives the cooling liquid to flow.

4. A liquid cooled server cabinet according to claim 3, wherein the agitation member comprises a circulation pump or a magnetic water pump or a water turbine.

5. The liquid cooling server cabinet of claim 1, wherein a first liquid level sensor is arranged in the server cabinet, the server cabinet is connected with a liquid supplementing system, and the liquid supplementing system supplements cooling liquid when the first liquid level is lower than a set value.

6. The liquid cooled server cabinet of claim 1 wherein the server cabinet has a flow channel, the flow channel being isolated from the interior of the server cabinet.

7. The liquid cooling server cabinet of claim 1, wherein the top of the water cooling box is provided with an opening, the server cabinet is provided with an annular limiting part, and a part of the server cabinet is inserted into the opening and then abuts against the upper surface of the top of the water cooling box.

8. The liquid cooling server cabinet of claim 7, wherein the upper surface of the top of the water cooling tank is concaved inwards to form an annular groove, a sealing ring is placed in the annular groove, and the annular limiting part presses the sealing ring.

9. The liquid cooling server cabinet of claim 7, wherein an annular connecting ring is formed outside the opening, a plurality of annular cutting grooves are formed in the outer wall of the annular connecting ring, and the annular connecting ring is welded and sealed with the annular limiting part.

10. The liquid cooling server cabinet of claim 1, wherein the second liquid level sensor is disposed in the water cooling tank, the server cabinet is connected with a cooling liquid discharge system, and the cooling liquid discharge system is started when the water level is lower than the lowest value of the server cabinet.